From: Nikita Karetnikov <nikita@karetnikov.org>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: bug-guix@gnu.org
Subject: Re: guix-package --roll-back
Date: Fri, 11 Jan 2013 00:48:22 -0500 [thread overview]
Message-ID: <87vcb4jmm8.fsf@karetnikov.org> (raw)
In-Reply-To: <8738y8ekst.fsf@gnu.org> ("Ludovic Courtès"'s message of "(unknown date)")
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> See SRFI-37 in Guile’s manual.
Yeah, I've already checked it, but it's very brief.
I created a simple function to test command-line options, but I'm having
the same problems. Here is the function:
(define* (foo #:optional arg)
(if arg
(simple-format #t "Just ~a~%" arg)
(simple-format #t "Nothing~%")))
The following version works:
(option '("foo") #f #t
(lambda (opt name arg result)
(foo arg)
(exit 0)))
# ./pre-inst-env guix-package --foo=42
Just 42
# ./pre-inst-env guix-package --foo
Nothing
This one doesn't work at all:
(option '("foo") #f #t
(lambda (opt name arg result)
(alist-cons 'foo arg result)))
Actually, the above helped me to understand that we want '--roll-back'
to behave differently than '--foo'. '--roll-back' shouldn't accept any
options at all, but it should somehow get the argument of '--profile'.
How can I do it?
Nikita
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next prev parent reply other threads:[~2013-01-11 5:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-21 22:49 guix-package --roll-back Nikita Karetnikov
2012-12-29 23:09 ` Nikita Karetnikov
2012-12-29 23:13 ` Andreas Enge
2012-12-30 15:30 ` Ludovic Courtès
2013-01-01 13:57 ` Nikita Karetnikov
2013-01-01 22:58 ` Ludovic Courtès
2013-01-03 5:42 ` Nikita Karetnikov
2013-01-03 14:41 ` Ludovic Courtès
2013-01-04 18:18 ` Nikita Karetnikov
2013-01-05 19:20 ` Ludovic Courtès
2013-01-09 19:04 ` Nikita Karetnikov
2013-01-10 15:01 ` Nikita Karetnikov
2013-01-10 22:26 ` Ludovic Courtès
2013-01-11 5:48 ` Nikita Karetnikov [this message]
2013-01-11 13:39 ` Ludovic Courtès
2013-01-12 21:03 ` Nikita Karetnikov
2013-01-13 20:40 ` Ludovic Courtès
2013-01-16 21:34 ` Nikita Karetnikov
2013-01-17 21:47 ` Ludovic Courtès
2013-01-21 5:50 ` Nikita Karetnikov
2013-01-22 21:37 ` Ludovic Courtès
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